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Investment Securities - Additional Information (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 18 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2023
USD ($)
Jun. 30, 2023
USD ($)
Debt Securities, Available-for-sale [Line Items]            
Unrealized Holding Losses less Than 12 Months, Fair Value           $ 11,489
Unrealized Holding Losses less Than 12 Months, Unrealized Losses           254
Unrealized Holding Losses 12 Months or More, Fair Value           124,053
Unrealized Holding Losses 12 Months or More, Unrealized Losses           18,542
Unrealized Holding Losses Total, Fair Value           135,542
Unrealized Holding Losses Total, Unrealized Losses $ 15,337   $ 15,337   $ 15,337 $ 18,858
Unrealized Holding Losses, Less Than 12 Months, Fair Value 61   61   61 783
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses $ 1   $ 1   $ 1 $ 22
Unrealized Holding Losses, 12 Months or More, Fair Value 1,758   1,758   1,758 1,333
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss           18,796
Unrealized Holding Losses Less Than 12 Months, Fair Value 61   61   61 12,272
Unrealized Holding Losses Less Than 12 Months, Unrealized Losses 1   1   1 276
U.S. government sponsored enterprise CMO            
Debt Securities, Available-for-sale [Line Items]            
Unrealized Holding Losses 12 Months or More, Fair Value           3,547
Unrealized Holding Losses 12 Months or More, Unrealized Losses           336
Unrealized Holding Losses Total, Fair Value           3,547
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss           336
U.S. government sponsored enterprise MBS            
Debt Securities, Available-for-sale [Line Items]            
Principal payments from investment securities 5,900 $ 7,600 $ 12,600 $ 16,900    
Proceeds from sale of investment securities available for sale $ 0 $ 0     $ 0  
Unrealized Holding Losses less Than 12 Months, Fair Value           10,839
Unrealized Holding Losses less Than 12 Months, Unrealized Losses           253
Unrealized Holding Losses 12 Months or More, Fair Value           120,506
Unrealized Holding Losses 12 Months or More, Unrealized Losses           18,206
Unrealized Holding Losses Total, Fair Value           $ 131,345
Unrealized Holding Losses, Less Than 12 Months, Fair Value 61   61   61 87
Unrealized Holding Losses, Less Than 12 Months, Unrealized Losses $ 1   $ 1   $ 1 $ 2
Unrealized Holding Losses, 12 Months or More, Fair Value $ 444   $ 444   $ 444 558
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss           18,459
U.S. SBA securities            
Debt Securities, Available-for-sale [Line Items]            
Unrealized Holding Losses less Than 12 Months, Fair Value           650
Unrealized Holding Losses less Than 12 Months, Unrealized Losses           1
Unrealized Holding Losses Total, Fair Value           650
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Accumulated Loss           $ 1